レトロヴィンテージモーダルコンポーネント

<div class="fixed inset-0 flex items-center justify-center bg-gray-900 bg-opacity-80 dark:bg-black dark:bg-opacity-90">  <div class="bg-yellow-300 dark:bg-yellow-700 text-gray-800 dark:text-gray-200 rounded-lg p-6 max-w-md w-full shadow-lg">    <h2 class="text-lg font-bold mb-4">My Portfolio Item</h2>    <img class="mb-4 rounded" src="https://picsum.photos/300/200" alt="Portfolio Item">    <p class="mb-4">This is a short description of the portfolio item showcasing the work or product. Explore more to find out how it can benefit you!</p>    <div class="flex items-center">      <img class="rounded-full w-10 h-10 mr-2" src="https://randomuser.me/api/portraits/men/1.jpg" alt="Avatar">      <span class="font-semibold">John Doe</span>    </div>    <div class="mt-6 flex justify-end">      <button class="bg-yellow-500 hover:bg-yellow-600 dark:bg-yellow-600 dark:hover:bg-yellow-500 text-white font-bold py-2 px-4 rounded">Close</button>    </div>  </div></div>